Voltage References

Voltage references are electronic devices that provide a fixed voltage. They provide a constant voltage regardless of external factors like the load on the device or fluctuations in the power supply.


Voltage references have different characteristics depending on their purpose. Voltage references used in laboratory applications are designed to have extremely high precision and accuracy, whereas those used as regulators for computer power supplies are much cheaper but less precise. 


Types of voltage references

There are many different kinds of voltage references, generally categorised by type, tolerance, rated voltage, reference voltage and rated current. The most common tolerances are ±2%, ±1% and ±0.5%, but voltage references are available even up to ±40%. 


What are voltage references used for? 

Voltage references can be used for a variety of different precision measurement and control systems such as power supplies in personal computers and analog-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. 


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Description Price Nominal Voltage Package Type Reference Type Initial Accuracy Mounting Type Topology Maximum Output Current Maximum Input Voltage Minimum Output Voltage Maximum Output Voltage Pin Count Line Regulation Load Regulation Dimensions
RS Stock No. 761-5905
Mfr. Part No.LM4040DIZ-4.1/NOPB
PHP30.732
Each (In a Pack of 5)
units
4.096V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - 4.1 V 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 145-1010
Mfr. Part No.TL431ACLP
PHP6.337
Each (In a Bag of 1000)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 797-4810
Mfr. Part No.TL431AMFDT,215
BrandNexperia
PHP15.561
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 661-9827
Mfr. Part No.TL431CLPR
PHP13.867
Each (In a Pack of 10)
units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 162-6249
Mfr. Part No.LM4040DIZ-4.1/NOPB
PHP10.802
Each (In a Box of 1800)
units
4.096V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - 4.1 V 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 168-4859
Mfr. Part No.TL431ACDBZT
PHP18.449
Each (On a Reel of 250)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 661-9502
Mfr. Part No.TL431ACDBZR
PHP12.825
Each (In a Pack of 10)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 661-9758
Mfr. Part No.TLE2426IP
PHP119.106
Each (In a Pack of 5)
units
- PDIP Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 8 - - 9.81 x 6.35 x 4.57mm
RS Stock No. 162-5920
Mfr. Part No.TLE2426IP
PHP102.90
Each (In a Tube of 50)
units
- PDIP Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 8 - - 9.81 x 6.35 x 4.57mm
RS Stock No. 121-9495
Mfr. Part No.TL431ASA-7
PHP3.968
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 40 V 2.5 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 527-306
Mfr. Part No.TL431ACDBZT
PHP31.50
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 922-2524
Mfr. Part No.TL431ACDBZR
PHP5.09
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 738-5333
Mfr. Part No.TL431ASA-7
PHP14.284
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 40 V 2.5 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 661-9518
Mfr. Part No.TL431AIDBZR
PHP14.696
Each (In a Pack of 10)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 168-4858
Mfr. Part No.TL431AIDBZT
PHP21.746
Each (On a Reel of 250)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 709-5490
Mfr. Part No.REF195ESZ
PHP286.65
Each
units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 4 ppm/V 4 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 809-5374
Mfr. Part No.TL431AILP
PHP20.48
Each (In a Pack of 5)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 - - 5.21 x 4.19 x 5.34mm
RS Stock No. 169-5610
Mfr. Part No.LM4040D25IDBZR
PHP14.54
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 111-1104
Mfr. Part No.REF02CPZ
PHP175.458
Each (In a Tube of 50)
units
5V PDIP Fixed ±1.0 % Through Hole Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 797-4838
Mfr. Part No.TL431BQDBZR,215
BrandNexperia
PHP15.422
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
Related Products
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.